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Finding the Fourth Proportional to 339,662.40, 509,542.20 and 103,023.60

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Solution

The fourth proportional to 339,662.40, 509,542.20 and 103,023.60 is: 154,550.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,662.40 : 509,542.20 = 103,023.60 : x
  2. Step 2: Convert to fraction form
    339,662.40/509,542.20 = 103,023.60/x
  3. Step 3: Cross multiply
    339,662.40x = 509,542.20 × 103,023.60
  4. Step 4: Simplify right side
    339,662.40x = 52,494,871,795.92
  5. Step 5: Solve for x
    x = 52,494,871,795.92/339,662.40
  6. Step 6: Final answer
    x = 154,550.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.